diff --git a/layout/base/FrameLayerBuilder.cpp b/layout/base/FrameLayerBuilder.cpp
index 48111a66d1bf..59fb6a038fdf 100644
--- a/layout/base/FrameLayerBuilder.cpp
+++ b/layout/base/FrameLayerBuilder.cpp
@@ -5287,7 +5287,7 @@ FrameLayerBuilder::BuildContainerLayerFor(nsDisplayListBuilder* aBuilder,
   const DisplayItemScrollClip* containerScrollClip = aParameters.mScrollClip;
 
   ContainerLayerParameters scaleParameters;
-  nsRect bounds = aChildren->GetClippedBoundsUpTo(aBuilder, containerScrollClip);
+  nsRect bounds = aChildren->GetScrollClippedBoundsUpTo(aBuilder, containerScrollClip);
   nsRect childrenVisible =
       aContainerItem ? aContainerItem->GetVisibleRectForChildren() :
           aContainerFrame->GetVisualOverflowRectRelativeToSelf();
diff --git a/layout/base/nsDisplayList.cpp b/layout/base/nsDisplayList.cpp
index 0d211b0b3244..01cfb49afb4d 100644
--- a/layout/base/nsDisplayList.cpp
+++ b/layout/base/nsDisplayList.cpp
@@ -1396,11 +1396,11 @@ nsDisplayList::GetBounds(nsDisplayListBuilder* aBuilder) const {
 }
 
 nsRect
-nsDisplayList::GetClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
-                                    const DisplayItemScrollClip* aIncludeScrollClipsUpTo) const {
+nsDisplayList::GetScrollClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
+                                          const DisplayItemScrollClip* aIncludeScrollClipsUpTo) const {
   nsRect bounds;
   for (nsDisplayItem* i = GetBottom(); i != nullptr; i = i->GetAbove()) {
-    bounds.UnionRect(bounds, i->GetClippedBoundsUpTo(aBuilder, aIncludeScrollClipsUpTo));
+    bounds.UnionRect(bounds, i->GetScrollClippedBoundsUpTo(aBuilder, aIncludeScrollClipsUpTo));
   }
   return bounds;
 }
@@ -2187,8 +2187,8 @@ nsDisplayItem::GetClippedBounds(nsDisplayListBuilder* aBuilder)
 }
 
 nsRect
-nsDisplayItem::GetClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
-                                    const DisplayItemScrollClip* aIncludeScrollClipsUpTo)
+nsDisplayItem::GetScrollClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
+                                          const DisplayItemScrollClip* aIncludeScrollClipsUpTo)
 {
   nsRect r = GetClippedBounds(aBuilder);
   for (const DisplayItemScrollClip* sc = mScrollClip;
diff --git a/layout/base/nsDisplayList.h b/layout/base/nsDisplayList.h
index 92d193f1a924..6d1b05b19fd3 100644
--- a/layout/base/nsDisplayList.h
+++ b/layout/base/nsDisplayList.h
@@ -1437,8 +1437,8 @@ public:
    * The intersection is approximate since rounded corners are not taking into
    * account.
    */
-  nsRect GetClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
-                              const DisplayItemScrollClip* aIncludeScrollClipsUpTo);
+  nsRect GetScrollClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
+                                    const DisplayItemScrollClip* aIncludeScrollClipsUpTo);
 
   nsRect GetBorderRect() {
     return nsRect(ToReferenceFrame(), Frame()->GetSize());
@@ -2162,8 +2162,11 @@ public:
    * The result is not cached.
    */
   nsRect GetBounds(nsDisplayListBuilder* aBuilder) const;
-  nsRect GetClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
-                              const DisplayItemScrollClip* aIncludeScrollClipsUpTo) const;
+  /**
+   * Return the union of the scroll clipped bounds of all children.
+   */
+  nsRect GetScrollClippedBoundsUpTo(nsDisplayListBuilder* aBuilder,
+                                    const DisplayItemScrollClip* aIncludeScrollClipsUpTo) const;
   /**
    * Find the topmost display item that returns a non-null frame, and return
    * the frame.
@@ -3187,7 +3190,7 @@ public:
    */
   virtual void UpdateBounds(nsDisplayListBuilder* aBuilder) override
   {
-    mBounds = mList.GetClippedBoundsUpTo(aBuilder, mScrollClip);
+    mBounds = mList.GetScrollClippedBoundsUpTo(aBuilder, mScrollClip);
     // The display list may contain content that's visible outside the visible
     // rect (i.e. the current dirty rect) passed in when the item was created.
     // This happens when the dirty rect has been restricted to the visual